diff --git a/iosbuild.sh b/iosbuild.sh
index 044745f0..7c5e691b 100755
--- a/iosbuild.sh
+++ b/iosbuild.sh
@@ -13,6 +13,9 @@
 
 set -e
 
+# Set this variable based on the desired minimum deployment target.
+readonly IOS_MIN_VERSION=6.0
+
 # Extract the latest SDK version from the final field of the form: iphoneosX.Y
 readonly SDK=$(xcodebuild -showsdks \
   | grep iphoneos | sort | tail -n 1 | awk '{print substr($NF, 9)}'
@@ -118,7 +121,7 @@ for PLATFORM in ${PLATFORMS}; do
   SDKROOT="${PLATFORMSROOT}/"
   SDKROOT+="${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDK}.sdk/"
   CFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT} -O3 -DNDEBUG"
-  CFLAGS+=" -miphoneos-version-min=6.0 ${EXTRA_CFLAGS}"
+  CFLAGS+=" -miphoneos-version-min=${IOS_MIN_VERSION} ${EXTRA_CFLAGS}"
 
   set -x
   export PATH="${DEVROOT}/usr/bin:${OLDPATH}"
diff --git a/xcframeworkbuild.sh b/xcframeworkbuild.sh
index 70770e7e..3bc16b0e 100755
--- a/xcframeworkbuild.sh
+++ b/xcframeworkbuild.sh
@@ -12,6 +12,11 @@
 
 set -e
 
+# Set these variables based on the desired minimum deployment target.
+readonly IOS_MIN_VERSION=6.0
+readonly MACOSX_MIN_VERSION=10.15
+readonly MACOSX_CATALYST_MIN_VERSION=13.0
+
 # Extract Xcode version.
 readonly XCODE=$(xcodebuild -version | grep Xcode | cut -d " " -f2)
 if [[ -z "${XCODE}" ]] || [[ "${XCODE%%.*}" -lt 11 ]]; then
@@ -135,10 +140,14 @@ for (( i = 0; i < $NUM_PLATFORMS; ++i )); do
     CFLAGS="-pipe -isysroot ${SDKROOT} -O3 -DNDEBUG"
     case "${PLATFORM}" in
       iPhone*)
-        CFLAGS+=" -miphoneos-version-min=6.0 -fembed-bitcode"
+        CFLAGS+=" -miphoneos-version-min=${IOS_MIN_VERSION} -fembed-bitcode"
         ;;
       MacOSX-Catalyst*)
-        CFLAGS+=" -target ${ARCH}-apple-ios13.0-macabi"
+        CFLAGS+=" -target"
+        CFLAGS+=" ${ARCH}-apple-ios${MACOSX_CATALYST_MIN_VERSION}-macabi"
+        ;;
+      MacOSX*)
+        CFLAGS+=" -mmacosx-version-min=${MACOSX_MIN_VERSION}"
         ;;
     esac